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Anatomy of a Joint Joints are the areas where 2 or more bones meet. Most joints are mobile, allowing the bones to move. Joints consist of the following: Cartilage. This is a type of tissue that covers the surface of a bone at a joint. Cartilage helps reduce the friction of

Types of Hearing Loss in Children What are the different types of hearing loss? There are 3 main types of hearing loss: sensorineural, conductive, and mixed (both sensorineural and conductive). These types of hearing loss can be present at birth (congenital). Or they can happen

Cystic Fibrosis Overview What is cystic fibrosis? Cystic fibrosis (CF) is an inherited disease of the glands that make mucus and sweat. People with CF get a defective gene from both parents. People who have one defective gene from one parent are called carriers. They don't have

Anatomy of the Endocrine System The endocrine system is a complex network of glands and organs. It uses hormones to control and coordinate your body's metabolism, energy level, reproduction, growth and development, and response to injury, stress, and mood. The following are key

About the Heart and Blood Vessels The heart is the hardest working muscle in the human body. Located almost in the center of the chest, a healthy adult heart is the size of a clenched adult fist. By age 70, the human heart will beat more than 2.5 billion times. The heart is

Thyroid Conditions Click on the links below to learn more about these topics. Hyperthyroidism Hypothyroidism Postpartum Thyroiditis© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always

Thalassemia Click on the links below to learn more about this topic. Alpha Thalassemia Beta Thalassemia (Cooley's Anemia)© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your

Substance Exposure Click on the links below to learn more about this topic. Neonatal Abstinence Syndrome Fetal Alcohol Syndrome (FAS)© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always

Developmental Disorders Click on the links below to learn more about these topics. Pervasive Developmental Disorders Autistic Disorder Learning Disorders Communication Disorders© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a

Genetic Disorders Associated with Congenital Heart Disease Click on the links below to learn more about these topics. Down Syndrome Marfan Syndrome 22q11.2 Deletion Syndrome© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a